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Target TRACE in CentOS
by Sergio Belkin 03 Oct '13

03 Oct '13

HI, I'm trying to use TRACE target of raw table but It doesn't work It's a CentOS 6.2 with kernel 2.6.32-220.7.1.el6.x86_64. lsmod | egrep -i "raw|trace|log" iptable_raw 2264 1 ip_tables 17831 4 iptable_raw,iptable_filter,iptable_mangle,iptable_nat xt_TRACE 1060 1 ipt_LOG 5845 5 ipt_ULOG 10765 11 dm_log 10122 2 dm_mirror,dm_region_hash dm_mod 81596 14 dm_mirror,dm_log The problem is TRACE target maches but it isn't logging anything.... Chain PREROUTING (policy ACCEPT 380796 packets, 194521672 bytes) pkts bytes target prot opt in out source destination 6 360 TRACE tcp -- * * 0.0.0.0/0 A.B.C.D tcp dpt:443 if I use the LOG target it WORKS, but TRACE it's better for debugging, am I doing something wrong or this CentOS release has no full support for this target? Thanks in advance! -- -- Sergio Belkin http://www.sergiobelkin.com Watch More TV http://sebelk.blogspot.com LPIC-2 Certified - http://www.lpi.org

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CentOS-announce Digest, Vol 104, Issue 2
by centos-announce-request＠centos.org 03 Oct '13

03 Oct '13

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2013:1400 CentOS 6 setup Update (Karanbir Singh) 2. CEBA-2013:1401 CentOS 6 qemu-kvm Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Wed, 2 Oct 2013 16:45:47 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2013:1400 CentOS 6 setup Update To: centos-announce(a)centos.org Message-ID: <20131002164547.GA65224(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:1400 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-1400.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: f3baabe199eabf0c11866c1c076f0c6bc01abe0c1cab20aa3348cd8e1c967031 setup-2.8.14-20.el6_4.1.noarch.rpm x86_64: f3baabe199eabf0c11866c1c076f0c6bc01abe0c1cab20aa3348cd8e1c967031 setup-2.8.14-20.el6_4.1.noarch.rpm Source: 6cd2835e633e6af4c072f1e444dc150aa91cb96bf92c1ca84321e2bed2b54377 setup-2.8.14-20.el6_4.1.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Wed, 2 Oct 2013 16:52:02 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2013:1401 CentOS 6 qemu-kvm Update To: centos-announce(a)centos.org Message-ID: <20131002165202.GA523(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:1401 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-1401.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 9a5d53661265a21e2c01437bfa501c89a97931b5d9d204f85e9ac9a237f90123 qemu-guest-agent-0.12.1.2-2.355.0.1.el6_4.9.i686.rpm x86_64: d7bba07262272b8d1ba80430c0aed94c66689ad2f0bc204c0d4db73d9212a28c qemu-guest-agent-0.12.1.2-2.355.0.1.el6_4.9.x86_64.rpm 927ca6ac3edc771921ac09980347a42e5fbcd1da932014a0997e0dfee0ee2104 qemu-guest-agent-win32-0.12.1.2-2.355.0.1.el6_4.9.x86_64.rpm a40f87712412f4b6b4483f11fe8c7dbb301f1888b4d62ad172cae0b6d4ee6b28 qemu-img-0.12.1.2-2.355.0.1.el6_4.9.x86_64.rpm 031c4b40e2003851a7b062efb555382835d59a54659b396b68a4736ccd6d19b8 qemu-kvm-0.12.1.2-2.355.0.1.el6_4.9.x86_64.rpm e8d64b86e9ae7564ae68149c8f4e9d927f1987fb816f46d9cd8caea2be2a8549 qemu-kvm-tools-0.12.1.2-2.355.0.1.el6_4.9.x86_64.rpm Source: 5f7e087dee9073fb16ee6d3b49f6902c487d01665471ab0bfe70948d650f5449 qemu-kvm-0.12.1.2-2.355.0.1.el6_4.9.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 104, Issue 2 ***********************************************

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About Memory mirroring
by Rajagopal Swaminathan 03 Oct '13

03 Oct '13

Greetings, Was wondering if any software exists for mirroring memory across hosts like what drbd does for disks. I am somewhat aware of copying of a VM's memory when a live migration is done. Another query, as I have not seen too many VM migrations, is that what happens to the memory contents such as data yet to be written onto disk, states etc happens when one of the RHCS cluster hosts which is running VM fail: does the cluster restart the machine? An example perhaps would be suppose the VM is running a movie what would the user's experience would be. I tried it on cluster with ctdb. The movie simply restarted. Any experiences? -- Regards, Rajagopal

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CIFS Share with encrypted credentials
by Dolev Farhi 03 Oct '13

03 Oct '13

Hi, I have a CIFS share that I mount on a CentOS6.4. Currently I am keeping the password in a regular hidden file, for example /test/.cred with the username and password. the /etc/fstab directive points to that file. for example: //10.0.0.1/share /mnt cifs defaults,credentials=/test/.cred Since this file is readable by the root user, I figured if there might be a way to encrypt this file, and with decrypt this file with a script so the mount will succeed, and then encrypt it again. or maybe there is another way of doing this? any ideas? --- Dolev

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installing centos with oos ntfs format drives
by g 02 Oct '13

02 Oct '13

greetings. i am going to run a fresh install of centos 6.4 and want to mount 3 partitions of oos that are formatted as ntfs in an oem installed box. if during install, i set up partitions /dev/sda1, /dev/sda2, and /dev/sdb1 as ntfs, will install install ntfs software or will i have to select it later on in installation? also, is it better to mount them under /mnt to keep /media clean? tia. -- peace out. in a world with out fences, who needs gates. tc.hago. g .

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Partitionable Raid
by Eugenio Pacheco 02 Oct '13

02 Oct '13

Hi, After reading the tutorial at http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 I have the following question: What should I put instead of splashimage=(hd0,0)/grub/splash.xpm.gz and root (hd0,0) on /etc/grub.conf? Should I leave those lines untouched? If so, how would grub know where to boot from if /dev/sda fails? Or I would need to swap the drives in order to boot properly and then put a new one as /dev/sdb and then add it to the array? Thanks in advance for all the help. Best regards, Eugenio Pacheco

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CentOS-announce Digest, Vol 104, Issue 1
by centos-announce-request＠centos.org 02 Oct '13

02 Oct '13

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Weird netinstall issue
by Phil Dobbin 01 Oct '13

01 Oct '13

Hi. The other day I burnt a copy of a CentOS 6.4 64 bit netinstall disc, verified the disc which passed & about a third of the way through the install it informed me that there was no CD in the drive & refused to carry on. So I burnt another & the same thing happened. So using the same disk burner & the same batch of disks, I burnt a copy of a Debian 7.1 netinstall & it installed perfectly. Any thoughts gladly welcome (the CentOS disc was downloaded from the CentOS repos). Cheers, Phil... -- currently (ab)using Arch Linux, CentOS 5.9 & 6.4, Debian Squeeze & Wheezy, Fedora Spherical & That Damn Cat, Lubuntu 12.10, OS X Snow Leopard & Tiger, Ubuntu Quantal, Raring & Saucy GnuGPG Key : http://phildobbin.org/publickey.asc

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SysRq over usb serial adapters
by Billy Crook 01 Oct '13

01 Oct '13

I am having trouble sending sysrq commands over USB serial, and I'm not sure what else to check. I have two identical machines, each with usb-to-serial adapters, joined by a null modem adapter. One runs an agetty, the other minicom. I can log in over the agetty as a user and it works as expected, until I try to send a sysrq. To send a break in minicom, I type [Ctrl]+[a] then [f]. Then I type the character [m] to do a test. I expect to see memory information print to screen, or at least show up in dmesg. Instead I only see the letter m on my shell. I'm using 115200, 8N1, VT102. I can echo m > /proc/sysctl-trigger, and dmesg shows that the sysrq was received when initiated via the procfs interface. But not over serial, and that's what I need. -- Billy Crook • Network and Security Administrator • RiskAnalytics, LLC

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Linux tool to check random I/O performance
by mcclnx mcc 01 Oct '13

01 Oct '13

we just purchase new I/O card and like to check I/O performance. for sequence I/O performance test we can use "hdparm -t /dev/xxx" bur for random I/O performance test which Linux command I can use? ** our environment does NOT allow install third party software.. Thanks

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